Squaring.net >> IRTS >> PPIRTSS >> Order 18

Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:90AR GHM

Order: 18

Horizontal side: 90 Vertical side: 90

Elements: 4, 4√2, 6, 6√2, 7√2, 10, 12, 11√2, 12√2, 22, 16√2, 23, 22√2, 34, 45, 34√2, 56, 45√2.

Code: 565 0 34 454 45 45 453 90 45 114 56 34 70 67 45 231 90 45 40 60 38 41 64 38 107 64 38 160 74 38 347 0 34 340 34 34 124 46 22 123 58 22 62 64 28 61 64 34 224 68 0 223 90 0

The properties below may precede order:side in a tiling's title:

Credit for Discovery

Just three people are credited with the discovery of Primitive Perfects:

Geoffrey H. Morley (GHM, England)

Jasper D. Skinner, II (JDS, United States)

William T. Tutte (WTT, Canada, 1917-2002) (15:44AI, 17:136AJ and 19:56AJ only)

56
45√2
45
11√2
7√2
23
4√2
4
10
16√2
34
34√2
12√2
12
6√2
6
22√2
22